– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Sun 11 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sun 11 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Very mild (max 12°C on Sun afternoon, min 6°C on Sun morning). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 4mm), mostly falling on Wed morning. Warm (max 22°C on Fri afternoon, min 11°C on Wed morning). Wind will be generally light. | |||||||||||||||||
Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  |  |  |  | |  | | | | | | | |
clear | clear | clear | clear | clear | some clouds | cloudy | some clouds | light rain | light rain | light rain | rain shwrs | some clouds | clear | clear | clear | clear | clear | |
Cloud base (m) | 2450 | 2400 | 1900 | 850 | 600 | 800 | 1000 | 9250 | 9300 | 8650 | ||||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | 2 | 3 | 0.4 | 0.2 | — | — | — | — | — | — |
max °C | 11 | 12 | 8 | 10 | 12 | 8 | 10 | 11 | 10 | 11 | 12 | 12 | 16 | 18 | 15 | 20 | 22 | 17 |
min °C | 6 | 12 | 6 | 6 | 11 | 7 | 9 | 10 | 10 | 11 | 12 | 12 | 12 | 18 | 14 | 15 | 20 | 15 |
chill °C | 5 | 12 | 6 | 6 | 11 | 7 | 9 | 10 | 10 | 11 | 12 | 12 | 12 | 18 | 14 | 15 | 20 | 15 |
Freezing level m | 1950 | 2100 | 2500 | 3050 | 3250 | 3100 | 2700 | 2600 | 2750 | 2850 | 2950 | 3550 | 3600 | 3650 | 3650 | 3800 | 3800 | 3650 |
 | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — |
 | — | 6:27 | — | — | 6:24 | — | — | 6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:16 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 2mm), mostly falling on Tue night. Very mild (max 12°C on Sun afternoon, min 6°C on Sun morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Wed morning. Warm (max 22°C on Fri afternoon, min 11°C on Wed morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.